KR102554654B1 - Retaining wall structure for cutting area and builtup soil area using rock backfill structure - Google Patents

Abstract

The present invention relates to a reinforced soil retaining wall structure using a selective backfill stiffener, which has excellent constructability, comprising: a retaining wall block body (100) buried inside a rock soil layer of a multi-stiffener; a backfill section (200) for supporting a back earth pressure; and a multi-stiffener (600) for supporting the back earth pressure.

Description

Retaining wall structure for cutting area and builtup soil area using rock backfill structure}

In the present invention, when constructing a retaining wall structure (reinforced soil retaining wall) for a cut or embankment, the rock stones are filled in the backfill space with a reinforcing bar member having a passive resistance body, and the rock embankment layer is first laminated, and then the soil layer is filled thereon. It enables selective backfilling, which is a problem of insufficient supply of good quality soil (in Korea, due to the lack of soil, smooth supply is difficult, so rock embankment construction is being carried out on site, but in this case, fiber reinforcement in the lower section where a lot of load occurs (Geograd) is damaged, resulting in poor pull-out resistance and deterioration in the stability and safety of the retaining wall structure.) It relates to a reinforced soil retaining wall structure using a selective backfill reinforcing material, characterized in that it ensures resistance (displacement of retaining wall blocks due to earth pressure, suppression of fullness, extrusion).

In general, the reinforcement soil method is a method of inserting a reinforcing material between a retaining wall and soil to increase the strength of the ground by the pull-out resistance between the soil and the reinforcing material.

Such a reinforced soil retaining wall is a structure in which a plurality of blocks are stacked, soil is formed on the rear surface of the blocks, and reinforcing materials are laid between the blocks to resist external force or earth pressure, and are often constructed instead of existing concrete retaining walls.

Accordingly, existing reinforcing materials include a sheet type, a grid type, a strip type, and the like, mainly made of a metal material, which can be referred to as an inextensible reinforcing material, and a geotextile, which can be referred to as an extensible reinforcing material.

In the early 1980s, non-extensible reinforcing materials were mainly used, but non-extensible reinforcing materials are heavy and difficult to transport and install, and also reduce durability due to corrosion.

In Korea, the market for reinforced soil retaining walls has rapidly expanded since the introduction of geogrid, an extensible reinforcing material, in 1994, and block-type retaining walls using geogrids are currently being constructed.

However, in Korea, smooth supply is difficult due to the lack of soil, so rock embankment construction is being performed on site. In addition, there is a problem in that the stability and safety of the retaining wall structure are deteriorated.

1. Republic of Korea Patent Registration No. 10-1066032 (registered on September 14, 2011)

In order to solve the above-described problem, the present invention is to fill the backfill space with a reinforcing bar member having a passive resistance body when constructing a retaining wall structure (reinforced soil retaining wall) for the cutting part or embankment part. Then, the soil layer is filled on top of it to perform selective backfilling, which solves the problem of insufficient supply of high-quality soil and at the same time, resists earth pressure (retaining wall by earth pressure) without breaking or damaging the existing fiber reinforcement. Its purpose is to provide that the occurrence of displacement of blocks, suppression of full stomach, push-out phenomenon) is ensured.

Accordingly, an object of the present invention is to provide a solid fixing bearing capacity for retaining wall blocks and a greatly improved resistance during pulling by mounting a passive resistor at the end of a reinforcing bar member.

In addition, the passive resistor of the present invention is provided with a funnel-shaped steel cone and a fixing nut fixing it, so that the anchoring force of the reinforcing bar member in the rock formation layer is greatly strengthened, so that the support durability of the retaining wall structure (resistance to the rock formation layer is greatly improved, Its purpose is to provide that the function of suppressing the occurrence of displacement of retaining wall blocks, the sound of stomach, and the pushing-out phenomenon) is remarkably improved.

In addition, the passive resistor of the present invention is fastened and assembled by a one-touch mounting hole when mounted on a reinforcing bar member, which guarantees simple and rapid workability, secures excellent fastening and binding reliability, and provides excellent workability. there is

In order to achieve this object, the present invention is formed so that the rubble filling space 110 penetrates vertically on the surface, the rear support end 120 is coupled to the fixing plate 130, and the fixing plate 130 has a reinforcing bar. A retaining wall block body 100 in which one end of the member 140 is assembled and mounted, but the rear end of the reinforcing member 140 diverges to the back filling section and is embedded into the rock fill layer of multiple reinforcing materials; A back filling section 200 in which a filling space for multiple reinforcing materials 300 is provided between the retaining wall block body 100 and the rear embankment or cut portion to support the back earth pressure; It is formed so as to be piled up at different heights according to the height set from the floor and partitioned several layers of rock soil layer (610: a section that replaces the insufficient high-quality soil layer), and the upper soil layer 620 is formed on the upper side of the rock soil layer 610 While the upper soil layer 620 is filled with fiber reinforcements (630: geogrid) at set height intervals inside the upper soil layer 620, multiple reinforcements 600 are provided to support the back earth pressure; made up of

Accordingly, the passive resistor 300 is further mounted at the distal end of the reinforcing bar member, but the passive resistor 300 is coupled and fixed by the funnel-shaped steel cone 310 and the fixing nut 320, thereby increasing the resistance to pulling out of the rock fill layer. Stability is ensured while being reinforced, but the steel cone 310 is formed so that the diameter of the inner end 311 is narrow and the diameter of the outer end 312 is wide, based on the direction toward the rear embankment or cutting portion, and the steel cone ( 310) and one end of the fixing nut 320 are formed to be bound by the one-touch mounting hole 400.

At this time, the one-touch mounting hole 400 allows the insertion ring 410 extending from the inner end 311 of the steel cone to protrude, but a plurality of stoppers 420 at set intervals and steps on the outer circumferential surface of the insertion ring 410 ) and a locking jaw 430, and the stopper 420 is provided with an inclined surface 421 in the form of an uphill slope along one rotation direction, but the inclined surface 421 is a fastening groove formed in the fixing nut 320 ( 440), it is formed to be closely fixed to the hemispherical surface of the hemispherical protrusion 450 formed on the inner circumferential surface of the fastening groove 440, and an arc-shaped or hemispherical mounting groove 422 on the high-top height side of the section of the inclined surface 421 This is formed so that the hemispherical surface of the hemispherical projection 450 is coupled in a one-touch fitting method while preventing over-rotation in the circumferential direction while corresponding.

As such, in the present invention, when constructing a retaining wall structure (reinforced soil retaining wall) for a cutting part or embankment part, the rock stones are filled with a reinforcing bar member having a passive resistor in the back filling space, and the rock embankment layer is first laminated, and then the soil layer is deposited thereon It is possible to perform selective backfilling by filling, which allows to solve the problem of insufficient supply of good quality soil and at the same time, resistance to earth pressure (displacement of retaining wall blocks caused by earth pressure) without damage or damage to the existing fiber reinforcement , full stomach, suppression of pushed-out phenomenon) has the effect of securing it.

Therefore, the present invention has the effect of greatly improving the resistance when pulling out and the solid fixing support for the retaining wall blocks by mounting the passive resistor at the end of the reinforcing bar member.

In addition, the passive resistor of the present invention is provided with a funnel-shaped steel cone and a fixing nut fixing it, so that the anchoring force of the reinforcing bar member in the rock formation layer is greatly strengthened, so that the support durability of the retaining wall structure (resistance to the rock formation layer is greatly improved, It has the effect of remarkably improving the function of preventing displacement of retaining wall blocks, sound of stomach, and pushing-out phenomenon).

In addition, the passive resistor of the present invention is fastened and assembled by a one-touch fitting when mounted on a reinforcing bar member, which guarantees simple and rapid workability, excellent fastening and fastening reliability, and has excellent workability.

1 is an exemplary side view showing a reinforced soil retaining wall structure using a selective backfill reinforcing material according to the present invention;
Figure 2 is an exemplary view showing that the reinforcing member is coupled to the retaining wall block body according to the present invention;
3 is an exemplary diagram showing a passive resistor according to the present invention;
4 to 7 are exemplary views showing one-touch fittings according to the present invention;
8 to 9 are exemplary views showing a reinforcing resistor according to the present invention.

The following describes the present invention with reference to the accompanying drawings.

First, as shown in FIG. 1, the present invention is largely composed of a retaining wall block body 100, a back filling section 200, and a multi-reinforcement member 600.

Accordingly, as shown in FIG. 2, the retaining wall block body 100 has a rubble filling space 110 vertically penetrating on the surface, and a fixing plate 130 is coupled to the rear support end 120. , One end of the reinforcing member 140 is assembled and mounted on the fixed plate 130, but the rear end of the reinforcing member 140 is branched into the back filling section and is formed to be embedded into the rock layer of the multi-reinforcement material.

That is, a slit groove 121 and an attachment groove 122 are formed at the rear support end so that the fixing plate 130 having the through hole 131 is seated and the reinforcing bar member is formed so that the fixing nut 132 is fastened. .

Accordingly, the passive resistor 300 is further mounted at the distal end of the reinforcing bar member, and the passive resistor 300 is coupled and fixed by a funnel-shaped steel cone 310 and a fixing nut 320, as shown in FIG. It is formed to secure the stability while strengthening the pull-out resistance to the rock fill layer.

At this time, the steel cone 310 is formed so that the diameter of the inner end 311 is narrow and the diameter of the outer end 312 is wide, based on the direction toward the rear embankment or cutting portion, and the inner end of the steel cone 310 (311) and one end of the fixing nut 320 are formed to be bound by the one-touch mounting hole 400.

Therefore, as shown in FIGS. 4 to 7, the one-touch mounting hole 400 allows the insertion ring 410 extending from the inner end 311 of the steel cone to protrude, but the outer circumferential surface of the insertion ring 410 It is formed to be provided with a plurality of stoppers 420 and locking jaws 430 at set intervals and steps.

At this time, the stopper 420 is provided with an inclined surface 421 of an uphill shape along one rotation direction, but when the inclined surface 421 is inserted into the fastening groove 440 formed in the fixing nut 320, the fastening groove 440 It is formed to be fixed in close contact with the hemispherical surface of the hemispherical projection 450 formed on the inner circumferential surface.

In addition, an arc-shaped or hemispherical mounting groove 422 is formed on the high-top height side of the section of the inclined surface 421 so that the hemispherical surface of the hemispherical protrusion 450 corresponds to prevent over-rotation in the circumferential direction and is combined in a one-touch fitting method is formed

Accordingly, it is preferable that a plurality of reinforcing resistors 500 are further mounted on the longitudinal line of the reinforcing bar member 140.

At this time, as shown in FIGS. 8 to 9, the reinforcing resistor 500 is a disk body, and a slit-shaped incision 510 is formed on one side, but the incision groove 510: is the reinforcing bar member 140 While being inserted in a direction orthogonal to the axis line, each protruding joint band 141 of the reinforcing bar member is formed so that the pulling resistance is reinforced while the incision groove 510 is fixed while being caught.

Accordingly, an accommodation groove 520 is formed on the inner periphery of the incision groove 510 of the reinforcing resistor 500 so that the '∪'-shaped elastic pin 530 is inserted inside, but the outer pressing end 531 of the elastic pin 530 On the basis of the silver inner support end (532: elastic force is generated while leaning on the inner wall of the storage groove), elastic force that always tends to spread outward is generated, so that the reinforcing resistor is inserted into the incision groove 510 with respect to the reinforcing bar member 140 having a circular cross section. It is formed so that it is firmly fixed without flow while being tightly fitted when fitted through.

In addition, a clamp-shaped protrusion 534 is formed at the outer corner of the extension end 533 connecting the inner pressure end 532 and the outer pressure end 531 so that it is in close contact or compressed while corresponding to the arc surface of the reinforcing bar member. It is formed (formed so that the elastic pin and the reinforcing bar member do not separate or come off from each other by ensuring the adhesiveness and compression).

At this time, a wedge 535 is formed on the outer end of the outer pressing end of the elastic pin 530, and the protruding rib of the reinforcing bar member (142: horizontally along the longitudinal direction of the reinforcing bar member is located at the radial portion based on the circular cross section of the reinforcing bar member The reinforcing resistor 500 inserted through the incision groove 510 while caught on one protruding line or protruding band is formed so that it is fixed in an upward direction (or in a reverse direction to the inserted direction) without being separated or removed.

Accordingly, the back filling section 200 is formed so as to support the back earth pressure by providing a filling space for the multi-reinforcement 300 between the retaining wall block body 100 and the rear embankment or cutting portion.

In addition, the multiple reinforcing materials 600 are formed so that several layers of rock embankment layers 610 (sections replacing insufficient high-quality soil layers) are formed while being piled up at different heights according to the set heights from the floor.

At this time, the upper soil layer 620 is filled on the upper side of the rock embankment layer 610, but the inside of the upper soil layer 620 is filled with a fiber reinforcement (630: geogrid) at a set height interval to support the back earth pressure. .

The present invention is not limited to the specific preferred embodiments described above, and various modifications can be made by anyone skilled in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes are within the scope of the claims.

100 ... retaining wall block body 110 ... rubble filling space
120 ... rear support 130 ... fixed plate
140 ... Rebar members
200 ... backfill section
300 ... passive resistor 310 ... steel cone
311 ... inner end 312 ... outer end
320 ... fixing nut
400 ... one-touch mounting hole 410 ... insertion ring
420 ... stopper 421 ... slope
422 ... Mounting groove 430 ... Catch jaw
431 ... Long horizontal plane 440 ... Fastening groove
450 ... hemispheres
500 ... reinforced resistor 510 ... cut groove
520 ... storage groove 530 ... elastic pin
531 ... outer pressure end 532 ... inner pressure end
533 ... extended end 534 ... protrusion
535 ... wedge
600 ... multi-reinforcement 610 ... rock layer
620 ... upper soil layer 630 ... geogrid

Claims (3)

A rubble filling space 110 penetrating vertically is formed on the surface, a fixing plate 130 is coupled to the rear support end 120, and one end of the reinforcing bar member 140 is assembled to the fixing plate 130 A retaining wall block body 100 to be mounted, but the rear end of the reinforcing bar member 140 is branched into the back filling section and buried into the rock embankment layer of multiple reinforcing materials; A back filling section 200 in which a filling space for multiple reinforcing materials 300 is provided between the retaining wall block body 100 and the rear embankment or cut portion to support the back earth pressure; It is formed so that several layers of rock embankment layers 610 are formed while being piled up at differential heights according to the set height from the floor, and the upper soil layer 620 is filled on the upper side of the rock embankment layer 610, but the upper soil layer 620 ) Inside the multi-reinforcement 600 to support the back earth pressure while the fiber reinforcement 630 is embedded at set height intervals; In the reinforced soil retaining wall structure using a selective backfill reinforcing material composed of,
The reinforcing bar member 140 has a passive resistance body 300 further mounted on the distal end, and the passive resistance body 300 is coupled and fixed by a funnel-shaped steel cone 310 and a fixing nut 320 to make the rock-casting layer have resistance to pulling out. Stability is secured while reinforcing, but the steel cone 310 is formed so that the diameter of the inner end 311 is narrow and the diameter of the outer end 312 is wide, based on the direction toward the rear embankment or cutting part. The inner end 311 of the 310 and one end of the fixing nut 320 are formed to be bound by the one-touch mounting hole 400,
The one-touch mounting hole 400 allows the insertion ring 410 extending from the inner end 311 of the steel cone to protrude, but the outer circumferential surface of the insertion ring 410 has a plurality of stoppers 420 and It is formed to be provided with a locking jaw 430, and the stopper 420 is provided with an inclined surface 421 in the form of an uphill along one rotation direction, but the inclined surface 421 is a fastening groove 440 formed in the fixing nut 320 When inserted into the fastening groove 440, it is formed to be closely fixed with the hemispherical surface of the hemispherical protrusion 450 formed on the inner circumferential surface, and an arcuate or hemispherical mounting groove 422 is formed on the high top height side of the section of the inclined surface 421. Reinforced soil retaining wall structure using a selective backfill reinforcing material, characterized in that the hemispherical surface of the hemispherical projection 450 corresponds to the one-touch fitting method while preventing over-rotation in the circumferential direction.
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